The Ultimate Sex Quiz

Making love. A roll in the hay. The mattress mambo. Doin' the deed. What is there to say about sex? It fuels entire industries, destroys political careers and results in a whole lot of babies. Ready to test how much you know about sex? As Marvin Gaye would say, let's get it on.

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Question 1 of 20

What's the size of the average erect penis?

5.5 to 6.2 inches long and 4.7 to 5.1 inches in circumference

Size matters: According to the British Journal of Urology International, men boast an average of 5.5 to 6.2 inches in length and 4.7 to 5.1 inches in circumference.

6.9 to 8.4 inches long and 4.7 to 5.1 inches in circumference

9.2 to 11.4 inches long and 4.7 to 5.1 inches in circumference.

Question 2 of 20

How many nerve endings does the clitoris have?

20

300

8,000

Good news, ladies: The clitoris has more than 8,000 nerve endings.

Question 3 of 20

How common is premature ejaculation?

It affects 5 to 10 percent of men of all ages.

It affects 20 to 30 percent of men of all ages.

About 20 to 30 percent of men of all ages experience premature ejaculation.

It affects 50 to 65 percent of men of all ages.

Question 4 of 20

Which of the following is not a known libido killer?

wine

antidepressants

exercise

You may think a glass of wine is getting you in the mood, but it's not. Exercise is far from being a libido killer; it's actually one of the best ways to kick-start your sex drive.

Question 5 of 20

How often do women have orgasms during sex?

5 percent of the time with intercourse, 95 percent of the time during oral sex

25 percent of the time with intercourse, 81 percent of the time during oral sex

According to sex counselor Ian Kerner, women reach orgasm about 25 percent of the time with intercourse and 81 percent of the time during oral sex.

50 percent of the time with both intercourse and oral sex

Question 6 of 20

What does the pudendal nerve do?

It transmits information from the uterus in women and the prostate in men to the brain.

It transmits information from the vagina in women and the rectum in both sexes to the brain.

It transmits information from the clitoris in women and from the scrotum and penis in men to the brain.

Thank your pudendal nerve for letting your brain know about the stimulation that the clitoris, scrotum and penis are receiving.

Question 7 of 20

In both men and women, the part of the brain known as the lateral orbitofrontal cortex shuts down during orgasm. What is this part of the brain known for?

language and memory

reason and behavioral control

There's a reason they call it losing control -- the lateral orbitofrontal cortex is the seat of reason and behavioral control.

movement and orientation

Question 8 of 20

A researcher studying brain activity said that the brain during an orgasm is similar to the brain of a person taking heroin. How similar?

50 percent

75 percent

95 percent

Love is a drug, and in the brain, heroin use and orgasm look almost completely alike -- 95 percent similar, in fact.

Question 9 of 20

How many sexual positions are described in the Kama Sutra?

18

Many people think the ancient sex manual describes 64 sexual positions, but it describes 64 karma-kalas, or modes of love-making. The actual positions only number 18.

64

200

Question 10 of 20

Which of the following is the most commonly reported sexual transmitted disease in the United States?

gonorrhea

chlamydia

According to the CDC, chlamydia is the most frequently reported STD in the U.S., with 1,030,911 chlamydial infections reported in 2006.

syphilis

Question 11 of 20

Across the globe, about how many times a year are lovers having sex?

731 times a year

139 times a year

Couples across the globe are having sex about 139 times a year! That’s a little more than twice a week.

334 times a year

Question 12 of 20

If a man doesn’t ejaculate, he may experience lingering aching or discomfort. What is the popular name for this unpleasant sensation?

compression

blackout

blue balls

Without relief, men are said to experience blue balls. This name was penned perhaps due to the color of the testicles during this unfortunate experience.

Question 13 of 20

During sexual intercourse, how long can the vagina stretch?

4-8 inches

During sexual intercourse or when the woman is aroused, the vagina swells to approximately 4 to 8 inches in length and 2.5 inches in width.

2-4 inches

2-8 inches

Question 14 of 20

A psychologist said that having unprotected sex could benefit women by doing which of the following?

lowering depression

According to psychologist Gordon Gallup, PhD., semen appears to act as an antidepressant in women.

slowing aging

strengthening brain cells

Question 15 of 20

What sensitive erogenous zone in women was coined by German doctor, Ernst Grafenberg?

G-spot

Althought it was popularized by a 1982 book, many doctors still debate whether the G-Spot actually exists.

clitoris

labia

Question 16 of 20

When a man becomes sexually excited, the arteries leading to the penis become enlarged. At the same time, the arteries leading from the penis are constricted. This causes the testicles to increase in size by what percentage?

25-50 percent

The uneven blood flow during the process of vasocongestion, contributes to the penis becoming erect and causes the testicles increases in size by 25-50 percent.

10-20 percent

60-70 percent

Question 17 of 20

What percentage or men and women masturbate respectively?

98 percent of men and 35 percent of women

72 percent of men and 83 percent of women

90 percent of men and 65 percent of women

Women do it too! Studies show that approximately 90 percent of men and 65 percent of women masturbate.

Question 18 of 20

After ejaculation, the penis is temporarily unresponsive to sexual stimulation. What is this period called?

refractory

The time the penis is unresponsive – usually about 30 minutes or more — is called the refractory period.

flaccidity

emasculate

Question 19 of 20

When a woman becomes sexually aroused, which of the following is responsible for releasing moisture?

Skene’s gland

Bartholin’s gland

The Bartholin’s glands are at the vagina opening and release natural lubrication.

Vaginal gland

Question 20 of 20

How long do you have to “do the do” to burn at least 85 calories?

One hour

15 minutes

30 minutes

if you want to burn some calories, devote about 30 minutes to sex and burn about at least 85 calories.